Spinning frame



Dec. 2, 1930. c. MORTON 1,783,301

SPINNING FRAME Filed Feb. 6, 1950 2 Sheets-Sheet 1 IN VEN TOR.

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\ Dec. 2, 1930. c MORTON 1,783,301

SPINNING FRAME F l 6, 1930 2 Sheets-Sheet 2 J t 5 IN V'EN TOR.

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Patented Dec. 2, 1930 PATENT OFFICE CHARLES HORTON, OI PAW'IUGKE'I, RHODE ISLAND SPINNING FRAME Application filed February 8, 1830. Serial No. 426,299.

This invention relates to improvements in means for driving the draft rolls in yarn drafting machines or frames, such for instance as spinning'frames, roving frames, in-

termediate frames, slubbing frames, and the like, and which is an improvement on my prior Patents Nos. 1,619,985 and 1,619,986, both dated March 8, 1927; and the object of m present invention is to provide simple and e ective means whereby a group of draft rolls may be formed of very small diameters to be set close together so as to reduce the distance between their nipping centers to the mlmmum, to better support the roving being drafted, and to emplo another draft roll thru which the interme iate roll of this group may be positively driven, by which construction an I increased draft on the roving may be obtained over those set more widely apart and a relatively coarse roving used and drawn down to a relatively fine yarn and at the same tlme produce a yarn product of uniform size and quality.

With these and other objects and advantageous features in view, the invention consists of a novel arrangement of parts more fully disclosed in the detailed description following, in conjunction with the accompanylng drawings, and more particularly set forth 1n the appended claims.

In the accompanying drawings: Fig. 1 is a side elevation showing a group of draft rolls in section and an arrangement of gear drive thru a break draft roll to the 1ntermediate rolls of said draft roll oup.

Fig. 2 is a to view illustrating t e general arrangement 0 the roup of draft rolls and a separate break dra t roll thru wh1ch the 1ntermediate roll of the group is driven from the gearing at the head end of the machine.

Fig. 3 is a diagrammatic view illustrating the general arrangement of the driving gears and the group 0 draft rolls also the break draft roll thru which the intermediate gear of the draft roll group is positively driven.

Fig. 4 shows the lower intermediate roll which is provided with a tongue and grooved at its opposite ends thru which it is connected to the ends of the correspondin ahgned rolls.

Fig. 5 is an enlarged viewi lustrating the tongue and groove connecting arrangement of the rolls, which connecting construction is mounted in a supporting bearing or journal.

Fig. 6 is a section on the line 6-6 of Fig. a, showing the tongue and groove construction 1n its bearing and an oil hole communicating therewith.

It is found in the operation of the usual frames for draft rolls such for instance, as spinning frames, roving frames and other frames of this general character, necessary to set the draft rolls relatively wide apart in order to be able to mount the driving gears on the ends thereof of sufficient size and strength to operate the rolls in a practical way, but by this old construction the distance between the centers or nips of the back and front draft rolls must necessarily be so great as to insufficiently support the sliver between them thus materially limiting the amount of draft on the roving thereby necessitating the use of relatively fine hanks or roving to prevent a break down during a. drawing operation and also prevent the forming of thick and thin places in the yarn.

The above difficulties have been overcome in a practical way by the use of two sets of draft rolls with a set of intermediate rolls between them forming a cooperating group of drafting rolls all of .a relatively small diameter so that they may run very close together to reduce the distance between their nips or centers to the very minimum and to permit the intermediate rolls of this grou tofiie driven thru a cooperating break dra ro By this construction, the intermediate rolls serve as a practical support for the roving between its draft rolls during'the drawing operation and so prevents the roving from breaking down thus permitting a finer yarn of uniform size and quality to be obtained from a relatively coarse roving and eliminating the preparation. of the finer hank roving thus materially reducing the cost of preparing the stock.

In order to overcome the difficulty of driving closely set rolls from the head end of the machine, I have mounted this set of so-called break draft rolls to the rear of the group of draft rolls, the lower roll of this set of break draft rolls being geared to drive the intermediate rolls of the group; and the following is a detailed description of the present embodiment of my invention and showing one arrangement of rolls and driving mechanism therefor, whereb these advantageous results may be obtaine With reference to the drawings, 10 and 11 designate respectively the bottom and top front rolls, and 12 and 13 the bottom and top back rolls of the draft roll group. Intermediate these two sets of rolls the upper and lower intermediate rolls 14 and 15 are set, both of which are preferably of relatively small size and are referably covered with leather, cork, or other soft material, these small intermediate rolls permitting the back and front rolls of the group to be set much closer together than has heretofore been possible in machines of this character.

A new feature of my present invention is my improved method or means of driving these intermediate rolls, which is that of providing a lower so-called break draft roll 16 located to the rear of the rear draft rolls 12 and 13 of the group. One end of this break draft roll being connected at the head end of the frame from the driving mechanism of the rest of the machine thru the large gear 19, on the end 20 of the front rolls 10, thence thru the pinion 21, large gear 22, pinion 23 and large gear 24 which is mounted on the end 25 of this break draft roll 16. The opposite end of this break draft roll is connected thru gear 26, idler 27 and gear 28, to positively drive the lower intermediate roll 14 at a speed a little greater than that of the back roll 12 of this group, which back roll 12 is driven from the break roll shaft 25 from the gear 29 thru inion 30 to the gear 31 on the back draft roll 12 of this group.

The gears at the head end of this machine may be arranged as change gears to vary the relative speeds of the different draft rolls to obtain the drafting ratio desired.

Cooperating with this lower break draft roll 16 is herein shown a relatively heavy to roll 32 mounted in the bearin 33 and whic cooperates with the bottom ro 16 to assist in starting or breaking the draft of the rovin as it passes therebetween to the group of dra rolls ahead of it. The tension may be applied to the top rolls 11 and 13 in the usual manner, the construction herein shown being that tension is applied to the saddle 34 thru the connection 35, lever 36 and weight 37. of these rolls are mounted in suitable bearings 1n the stands 38 and the different groups of rolls along the machine may be connected together by any suitable means, the ends of the intermediate rolls 14 being herein shown as bein provided with a tongue member 39 at one en and at its opposite end with a groove 40, which when arranged to interlock with each other may both be journaled in the single bearing 41 thereby providing a simple means of connecting up these rolls end to end and at thl? shame time providing a single bearing w 1c ma su ort t e o osite interlockin ends of bo t h r llls. pp g My improved construction of yarn draft frame or machine is extremely simple and provides a' most practical mechanism by which the intermediate roll of the group of draft rolls may be positively driven thru a draft roll other than those of the roup and from the head end of the machine t ru properly arranged gearing and at the same time permit of the use of gears of a suitable size at the other end of the roll to readily transm1t the power r uired.

The foregoing escription is directed solely towards the construction illustrated, but I des1re it to be understood that I reserve the privllege of resortin to all the mechanical changes to which t e device is susceptible, the invention being defined and limited only by the terms of the appended claims.

I claim:

1. In a yarn drafting machine, a group of draft rolls, comprising a pair of front rolls, a pair of back rolls, and a pair of interme- (hate rolls all arran ed in closely spaced relat1on to run with their peripheries just clear of each other, gears for driving said front and back rolls at different relative speeds, and a back feed draft roll thru which said pair of intermediate rolls is driven.

2. In a yarn drafting machine a group of draft rolls, com risin a pair of front rolls, a pair of back ro Is, an a pair of intermediate rolls all arran ed in closely spaced relation to run with t eir peripheries just clear of each other, a back draft roll, drive shafts for said rolls, gears for driving said front and back rolls at different relative speeds, the back feed draft roll bein driven from one end of the machine from t e front roll drive shaft and the intermediate roll of said group belng driven from the op osite end of the machlne thru said back fee draft roll.

3. In a yarn drafting machine, a group of draft rolls, comprising a pair of front rolls, a pa1r of back rolls, and a pair of intermed 1ate rolls all arranged in closely spaced relat1on to run with their peripheries just clear of each other, gears for driving said front and back rolls at different relative speeds, a back feed draft roll thru which said pair of lntermediate rolls is driven and a weight roll on the lower back feed draft roll located with 1ts periphery ust clear of that of the back roll of sald group.

4. In a yarn drafting machine, a group of draft rolls, COIIIPIlSlDg a pair of front rolls, a pa1r of back rolls, and a pair of intermediate rolls all arranged in closely s aced relatlon to run with their ripherles ust clear of each other, a pair of 30k feed draft rolls,

gears for driving said front and said back feed draft rolls, and means for driving the back and intermediate rolls thru the driven back feed draft roll from opposite ends of the machine.

5. In a yarn drafting machine, a group of draft rolls, comprising a pair of front rolls,

a pair of back rolls, and a pair of intermediate rolls all arranged in closely spaced relation to run with their eripheries just clear of each other, a back eed draft roll, drive shafts for said rolls, means including gears for driving said back feed draft roll from the front roll drive shaft, gears at one end of the machine for driving sald back rolls from said back feed draft roll drive shaft, and gears at the opposite endof the machine for driving said intermediate rolls for said back feed draft roll drive shaft.

In testimony whereof I afiix m signature.

CHARLES ORTON. 

